Automatic gun.



Patented 1an. 15,1901.. A. Bunaesfs@ y n@ U31. Gv. wm T um 0m TM U.c .Tm M

(No Model.)

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mrs l STATE-s Arana erica.

Aurelis UN' SPECIFICATION forming part f Lettera Paton-. No. 666,084, dated January 15., 1901.

Application led November S, 1900. Berial'vNo. 35,876. (No model.)

To @ZZ whom it may concern:

back that the cam-arm of the brake does Be it known that l, ANDREW BURGESS, re- I not lock the barrel firmly forward, butsnd siding at Owego, in the county of Tioga and State of New York, haveinvented certain new and useful Improvements in Automatic Guns, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to rearms o f the automatic magazine class.

The object of the invention is to produce a magazine gun or pistol in which the force of the discharge slides the barrel forward and partially controls that movement by an inertia-brake and cooking device, also a magazine with special holding and feeding device and a folding stock, together with other improvements and combinations of parts in automatic firearm mechanism.

Figure l is a vertical longitudinal section of a firearm in closed or tiring position emhodying my present invention. Fig.2is a View similar to Fig. 1, out partly cut away, and with the barrel forward or 4in open position and a cartridge raised to feeding position. Fig."3 is a side elevation of the top parts of the box-magazine detached and holding the cartridges. on the line l of the magazine of Fig. 3. Fig. 5 is a top plan and side elevation of theguiding cartridge-extractors, and Fig. 6 is a longitudinal horizontal section viewed from the top of butt-plate and connection to folding stock.

The frame 1 is of any suitable construction to support the working parts and is hollow and cylindrical at the top to confine th'e barrel to a reciprocatingmovement. y

The barrel 2 is of usual construction and is drivenforward in the frame by the force of discharge in firing the gun and is actuated by a spiral spring 30, as is common; but an inertiafbrake or retarding and partial locking device 3 is arranged to resist the initial opening movement.

The brake or locking piece 3 is pivoted in the frame below the barrel and has a heavy lower extensionA: and an upperarm or campiece 5 to bear rearwardly against a shoulder 6in the barrel, and a spring 7 turns the brake g or lever into such engagement, as iu Fig. 1.

The barrel-shoulder 6 is out so obliquely Fig. 4 is a verticalcross-section ward movement of the barrel, andthee cam will be forced to slide down by theoaolzpL-.y .5?,

turn upward the heavy inertia extensi'nfl'sA'f'1 This taking place at the moment of theflrstforward impulse of the barrel, the power required to quickly move the inertia-piece a great deal faster than the barrel is so great as to materially delay or retard the first part of the barrel movement. While such delay is not always'necessary, it becomes so when a long light barrel is used or in firing some kinds of ammunition togive time for the es cape of the gas and sufficiently reduce the pressure. g

The retarding eiect of theinertia-piece can be increased by carrying the shoulder 6 to more abrupt resistance by lessening its cur vature at its lower end, as shown, and the curves are indicated in dotted linesS in Fig.

2. The top of the shoulder 6 must be sloping enough to allow it to cam iout the arm 5, but when said arm is once started it may be moved down a steeper incline.

The firing-lock is housed in the frame rear- Ward of the brake 5 and consists of a firingpin 9, striker 10, sear ll, striker-head 12,and trigger 13, andthe said striker-head is in position, 'as in Fig. 1, to be engaged by the brake as it is turned by the barrel movement to thereby be cammed back to cocked position, as shown in Fig. 2, to he there engaged hook 14.

The sear is pivoted in the frame below the barrel and has a-point'l to engage in a notch 16 of the striker-head. A short pendent arm .as shown, by the sear 11 and also by trigger'- 17 of said sear is pressed back by recoil of is. closed. The striker-head is also provided esA oted one'on each side of the extension-top of head.

with half-@00k nach 20 and fun-cock notch 2l. The trigger is pivoted in the frame and has ahook 14, and is turned forward by the lSpring 22 to engage and h old back said striker- In Fig. 2 it is shown engaging in the' ward by force of the mainspring 23 to drive the firing-pin forward.

The heavy lower arm 4 of the brake 3, projecting forward of the trigger-guard, can be conveniently pressed upward by-hand to cock the lock without movement of the barrel, and the brake spring 7 returnsthe brake to engage the barrel, and said spring gives the brake greater power of resistance to the barrel by its strong but yielding pressure. The resistance of the mainspring in cooking also has a similar eect; but the inertia elfect is more immediate to delay the'initial movement of the barrel, as described.

The piece 24 is fixed into the frame forward of the inertia-brake removably, and the front part of the 'frame is screwed on, so that by removing these'parts the barrel and its lug 6 can be readily inserted from the front or pulled out of the frame. ,y

The magazine has a telescoping top, as described in my application, Serial No. 34,059,0f October 23, 1900. The upper section of the magazine has elastic clasping-jaws 28, between which the cartridge is lifted by the follower, and by the u-pward pressure of the follower the extensible or telescopic section of the gunmagazine is lifted until the catches 62, engaging the fixed part of the magazine, prevent further rising of the extensible section;

but I do not here provide the spring-jaws so strong as to hold against the force of the magazine-spring, b'ut brace or reinforce them by side levers 25 25. These levers 25 25 are pivthe magazine, and their upper arms extend up outside of the jaws on the magazine. The magazine-base 26 has holes to allow the lower turned-in ends of the levers to enter when the magazine extension has been forced down, asin Fig. 1. When said extension is raised by the magazine-spring or otherwise, as in Figs. 2, 3, and 4, said extension carries the levers 25 with it, raises their lower turned-in ends 60 to cam against shoulders 27 ,27 of thel magazine-base, and thereby turn said ends 60 outward, which causes the top arms to turn inward to press inward on the jaws 28 28 and firmly clasp said jaws on the top cartridge. The cartridge is thus held so it cannot escape when the barrel moves forward and the magazine-spring raises the cartridges and extension 29.

. The top front of the levers 25 preferably extend a little above the jaws 28, so that when the barrel springs back it tends to press the vwhichcfftrries the link 42.

easy movement.

'the link 42 firmly braced open.

levers and tl'ie jaws apart and downward, and the inner ihclines on'the lower ends of the lever-arms of the' `levers then 'beginning to leav,e the shoulders 27 27 of the magazinebase as the barrel takes in the feeding-cartridge said cartridge is easily releasedand inclosed by the barrel with but little loss of the jaws, to act in the same manner and to the same purpose.

The guide-extractors 31 31- are pivoted on eachl side of the recoil-shoulder 32 'and'have downward-extending hooks 33 that the cartridge-flange enters between while yet in the magazine-jaws, and said cartridge rising obliquely is guided up by said inclined hooks against the recoilshoulder,to there be stopped r by said recoil-shoulder and the inwardly-narrowing part 34 of said extractors.

As the cartridge-Shel ls are extract-ed by the extreme upper top of the hooks 35 they do not.

confine said shells downward, but admit of their free ejection by the next rising cartridges. f

It is very desirable in this class of arms to sometimes be able to rest it against the shoulder, and I here provide a folding stock con sisting of a cylindrical base 37 on the magazine-stock, on which a tubular arm 36 rotates. A spring-catch 38 holds this arm in 'open or folded t position. i A shoulder on the butt-plate 39 is held in folded or operative position by the spring 40 and follower 41,

As the magazine extends vertically in the magazine-stock it forms the center of the pivot lor swivelabout which the shoulderstock may swing in a horizontal plane to exin Fig. 1 to that indicated in Fig. 2 by one A The butt-plate first turns down, as shown in dotted lines in Fig. `1. When the follower'41, which is connected to the butt-plate by the link 42, moves forward, carrying its spring-pins 4343 to their engaging holes 44 44 in the tubular arm 36, and these pins spring into said holes, as shown in FiE. 6, the said butt-plate is thereby and by With the butt-plate in position of dotted lines in Fig. 1 a quarter-turn of the arm 36 rotates its loop 45 fon its fixed circular base 37, to bring its spring catch-pin in position to enter the hole 46 of the base, and thereby irmly hold its loop 45 and fix the arm'in its rearward extended position.

To hold the stock, the lock-pin 38 is first pressed out of the hole 46 by the thumb-piece 47, (which traverses the lockpiu andjhas.

limited movement in the'slot of the arm 36.) ThenV the 'arm 3b is turned forwardunderthe barrel of the gun, when the lock-pin 3S enters the shallow notch 4S ofthe base to hold it folded with elastic force. The spring-pins 43 43 are then pressed inward from their holes 44 44'in the arm 36 to release the butt-plate,v

which may then be folded upward, as in Fig. 1, and the forward pivot of the link 42 (which attaches it to the" buttfplate) reaching above the line of the butt-plate hinge'49 and the pivot of the link 42 (in the follower) the forcebf thespring 40 then holds up the butt.- plate by its elastic pressure, as in Fig. 1.

The stock-loop 45 isi-clamped to the base 37 by screws, as 5l 51, orin any other convenient manner.

I have describedthe gun in the best form now known to me.

I Vdo not limit many features to the precise constructions shown and described, as the same may be modified within the limits of my invention, as indicated by the claims herein. What I claim is"v 1. In Aan automatic gun, a frame and a longitudinally moving barrel, and an. inertiabrake bearing on the barrel to resist its initial forward movement, in combination substantially described. I

2. In an automatic gun, the combination of a frame, a l ongitudinally-movable piece by which the gun-breech is opened and closed, and .an inertia-brake acting on such movable piece to resist the initial opening movement, substantially asdescri bed.

3. In an automatic gun, a frame, the barrel reciprocating therein and provided with an inclined abutment, and a brake-piece hung in the frame and engaging said inclined abutment, and pressed thereby out of its line of resistance to the forward movement of the barrehin combination substantially as described.

4.` In .an automatic gun, the frame and sliding barrel, an inclined abutment on the barrel, an inertia brake-piece engaging said abutment and moved thereby as the barrel mpves forward,`and a striker engaged and cocked by the movement of the inertia-piece, all combined substantially as described.

5. In a gun of the character described, the combination of a frame, barrel, andan inertia brake-piece 4operating to retard the barrel movement as described, a striker cocked by the movement of said inertia brake-piece, anda sear acting on the striker to hold it cocked, said inertia-piece acting to release the scar as the barrel closes, substantially as described.

G. In aifautoinatic gun, the combination of a frame, barrel, and inertia brake-piece acting on the barrel as described, the striker cocked by said inertia-piece, the sear engaging the' striker and disengaged therefrom by the inertiapiece, and a trigger controlling the movement ofthe striker'when engaged therewith, substantially as described.

7. In an automatic gun, the frame, the reciprocating barrel having an inclined abutment'thereon, and-a weighted-lever pivoted inthe frame and having an inclined face engaging said abutment, ro be pressed` aside thereby and act as a brake to the barrel, and aspring acting on said weighted lever to restore itto normal position, all combined substantially asdescribed.v

8. In an automatic g'unth'e frame, reciprocating barrel having an inclined abutment thereon, and an inertia brakedever having cam engagement with said abutment, the striker engaged and cockedby said brakelever, and means for holding the. striker in .cocked position, all combined substantially as described.

9. In a gun as described, ay box-magazine having an extensible portieri provided with cartridge-clasping jaws, and clamping-levers carried by the magazine extension and acting to reinforce said jaws, all combined substan- A tially as described.

l0. In a gun as described,the box-magazine having an extensible portion, cartridge-clasping jaws carried by the extensible portion of extensible portion of the magazine and acting to reinforce saidv jaws, and bearing-shoulders on the magazine proper by which said levers are operated as the magazine is extended, all combined substantially as described.

11. In a gun as described, a box-magazine the magazine, clamping-levers pivoted to the ICO having an extensible portion, clasping-levers carried` by the extensible portion of the magathe rearward movement of the barrel, said upper section of the magazine being connected to the lower section by stops which limit the relative movement thereof, all com bined substantially as described.

1 4. In a firearm of the character described, a reciprocating barrel, a box-magazine having an upper telescopic/extension provided with cartridge-clasping jaws, and levers carried by the extension and acting to reinforce said jaws, all scribed.

15. In a gun as described, the reciprocatcombined substantially as de- 'zine andengaging the ixed portion, thus actf IIO ing barrel', the box-magazine `having; tele- 'scopic extension, levers carried 'by the extension and acting to clasp the cartridge, and inclines on the iixed magazine-section with which the levers engage, substantially as described. y v

`16. I n a gun of the class described, the reciprocating barrel, the upwardly-feeding magazine under the rear of' the barrel, and

the twin e'xtractors pivoted in the frame and having downwardly extending arms, inclined as described, to engage the ange of `the top cartridge and guide the same backtaining the magazine, a cylindrical portion shoulder-stock swiveled to said magazine-- forming the outside of the magazine, and a stock so' as to fold under the barrel on a vertical pivot, substantially as described.

to swing about the magazine as an axial ceu! ter, and means for holding said shoulderstantially as described.'

'19.* In a gun as described, the magazinestock, 'the shoulder-stock swiveled thereto so as toswing about the magazine as an axis, and the butt-plate hinged to said shoulderstock, so as to be folded toward the barrel when the shoulder-stock is turned forward, al1 substantially as described.

In testimony whereof I aix mysignature in presence of'two witnesses.

ANDREWr` BURGESS.

Witnesses: HARVEY T. WINFIELD, W. A. BARTLET'r.

stock in its folded or extended position, subv 

